US7100706B2 - Hand tool machine comprising a vibration-dampened handle - Google Patents

Hand tool machine comprising a vibration-dampened handle Download PDF

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Publication number
US7100706B2
US7100706B2 US10/297,373 US29737302A US7100706B2 US 7100706 B2 US7100706 B2 US 7100706B2 US 29737302 A US29737302 A US 29737302A US 7100706 B2 US7100706 B2 US 7100706B2
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US
United States
Prior art keywords
handle
machine housing
power tool
hand power
leaf springs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US10/297,373
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English (en)
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US20030132016A1 (en
Inventor
Gerhard Meixner
Pierre Jeannin
Patrick Maillard
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Robert Bosch GmbH
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Robert Bosch GmbH
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Filing date
Publication date
Priority claimed from DE2001118037 external-priority patent/DE10118037A1/de
Priority claimed from DE2001138123 external-priority patent/DE10138123A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JEANNIN, PIERRE, MAILLARD, PATRICK, MEIXNER, GERHARD
Publication of US20030132016A1 publication Critical patent/US20030132016A1/en
Application granted granted Critical
Publication of US7100706B2 publication Critical patent/US7100706B2/en
Adjusted expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/04—Handles; Handle mountings
    • B25D17/043—Handles resiliently mounted relative to the hammer housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
    • B25F5/006—Vibration damping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/371—Use of springs
    • B25D2250/381—Leaf springs

Definitions

  • the present invention concerns a hand power tool with vibration-damped handle that is coupled with the machine housing using damping means.
  • the invention is based on the object of providing a hand power tool having a handle of the type originally described that is joined to the machine housing of the hand power tool in a fashion that provides the greatest possible vibration damping.
  • the stated object is obtained 1 by the fact that the handle is coupled with the machine housing via two or more parallel levers situated nearly perpendicular to the longitudinal axis of the hand power tool, whereby the levers are hinge-mounted on the machine housing on the one hand, and on the other hand, on the handle.
  • the handle With such a “parallel rocker arm”, the handle achieves very high stability and is well protected against vibrations in the machine housing, because it does not have any direct connection points with the machine housing.
  • the coupling point on the handle is as far away as possible from the coupling point on the machine housing. This ensures that the relative motion between the handle and the machine housing has nearly only one component in the direction of the longitudinal axis of the hand power tool. It is advantageous that, with all levers, the distances between each of their two coupling points are nearly the same. This prevents undesired motion effects of the handle.
  • All of the levers can be accommodated in the machine housing, or one or more levers can be placed in a shoulder of the handle extending substantially perpendicular to the longitudinal axis of the hand power tool.
  • the parallel rocker arm can therefore be integrated in the hand power tool in space-saving fashion.
  • the vibration damping for the handle can be further increased by installing spring elements—preferably leaf springs—at one or more points between the handle and the machine housing.
  • spring elements preferably leaf springs
  • a further improvement of the vibration damping can be obtained by placing—rather than purely passive spring elements—one or more active damping elements between the handle and the machine housing that are controllable in such a fashion that they counteract vibrations in the machine housing.
  • the levers have a particularly vibration damping effect when they are designed as leaf springs.
  • the leaf springs are advantageously preloaded against a force exerted on the handle in the direction of the machine housing.
  • FIG. 1 shows a schematic representation of a handle supported on the machine housing by means of a parallel rocker arm
  • FIG. 2 shows a practical embodiment of the handle supported on the machine housing by means of a parallel rocker arm
  • FIG. 3 shows a hand power tool, in the case of which the pedal rocker arm is composed of leaf springs, and
  • FIG. 4 shows a hand power tool having a parallel rocker arm and a damping element inserted between handle and machine housing
  • FIG. 5 shows a hand power tool having a parallel rocker arm composed of preloaded leaf springs.
  • a hand power tool e.g., a drilling hammer or a chipping hammer or the like, is shown in FIG. 1 .
  • the hand power tool is composed of a machine housing 1 in which the machine drive is located, and a handle 2 coupled with the machine housing 1 .
  • the handle 2 is coupled with the machine housing 1 via a parallel rocker arm.
  • This parallel rocker arm is composed of two levers 4 and 5 situated parallel with one another and extending nearly perpendicular to the longitudinal axis 3 of the machine. Instead of the two levers 4 and 5 shown in the drawing, more than just two parallel levers can also be used.
  • the levers 4 and 5 are hinge-mounted on the handle 2 on the one hand and on the machine housing 1 on the other hand in such a fashion that the handle 2 can perform a relative motion in relation to the machine housing 1 nearly exclusively in the direction of the longitudinal axis 3 .
  • the coupling point 6 or 7 on the handle 2 in the case of each lever 4 or 5 —should be located as far as possible from the coupling point 8 or 9 on the machine housing 1 .
  • the coupling points 6 , 7 for both levers 4 , 5 are located on the upper end—preferably on a shoulder 10 extending parallel to the longitudinal axis 3 —of the handle 2 .
  • the two other coupling points 8 and 9 of the levers 4 and 5 are located on a carrier 11 located at the lower end of the machine housing 1 .
  • the coupling points 6 , 7 , 8 , 9 of the individual levers 4 , 5 are situated in such a fashion that—in the case of each lever 4 , 5 —the two coupling points 6 , 8 and 7 , 9 have the same distances between each other. If the distances are different, undesired motion effects can be produced at the handle—components of motion that deviate from a motion of the handle in the direction of the machine's longitudinal axis.
  • Damping means 12 preferably one or more compression springs, are inserted between the top end, the horizontally-extending shoulder 10 , the handle 2 , and the machine housing 1 .
  • FIG. 1 shows a highly schematic representation of the coupling of the handle 2 to the machine housing 1 by means of a parallel rocker arm in order to illustrate the mode of operation
  • FIG. 2 shows an exemplary embodiment of the same coupling of a handle 2 to a maching housing 1 of a hand power tool that is more closely oriented to a practical application. All parts previously described in conjunction with FIG. 2 and performing the same function are labelled in FIG. 2 with the same reference numerals as in FIG. 1 .
  • FIG. 2 shows that one stop 13 is located on the machine housing 1 and one stop 14 is located on the handle 2 for the compression spring 12 used as damping means between the handle 2 and the machine housing 1 .
  • a very space-saving accommodation of the parallel rocker arm can take place by accommodating at least one of the levers 4 , 5 in the shoulder of the handle 2 extending perpendicular to the longitudinal axis 13 of the hand power tool.
  • the carrier 11 for the coupling point 9 of the lever 5 located on the machine housing 1 extends up to the shoulder of the handle 2 extending perpendicular to the longitudinal axis 3 .
  • the lower end of this shoulder of the handle 2 extending perpendicular to the longitudinal axis 3 can be equipped with a connection piece 15 enclosing the carrier 11 .
  • This connection piece 15 only forms an edge between the carrier 11 and the handle 2 ; it does not perform the function of a mechanical guide for the handle 2 .
  • the exemplary embodiment in FIG. 2 in the case of which the one lever 4 is located in the machine housing 1 and the other lever 5 is located relatively far away from lever 4 in the handle 2 —results in a high level of stability of the handle 2 .
  • the width (in the direction perpendicular to the plane of the drawing) of the levers 4 , 5 has a stability-enhancing effect as well.
  • Both levers 4 , 5 of the parallel rocker arm can also be integrated in the machine housing 1 as well, however.
  • the described parallel rocker arm composed of the levers 4 , 5 can be located on only one side of the handle 2 , as shown in FIGS. 1 and 2 ; parallel rocker arms can also be provided on both sides—in the direction transverse to the longitudinal axis 3 of the machine—of the handle 2 .
  • the relative motions of the handle 2 in relation to the machine housing 1 are limited by an upper stop 16 and a lower stop 17 .
  • the two stops 16 and 17 are integrally molded on the shoulder 10 of the handle 2 extending in a horizontal direction. These two stops 16 and 17 can be inner walls of a recess in the shoulder 10 of the handle 2 extending in a horizontal direction, for example.
  • An arm 19 permanently joined with the machine housing 1 extends into this recess 18 .
  • the movement of the handle 2 away from the machine housing 1 is limited by the fact that the arm 19 meets the lower stop 17 .
  • the movement of the handle 2 toward the machine housing 1 is limited by the fact that the arm 19 meets the upper stop 16 .
  • the distance between the two stops 16 and 17 therefore determines the amount of play there is in the motion of the handle 2 .
  • the two stops 16 and 17 can also be located on the machine housing 1 , and the arm 19 can be located on the handle 2 . It is also possible for only one upper or lower stop to be provided on the machine housing 1 and/or on the handle 2 .
  • the levers 4 and 5 forming the parallel rocker arm are rigid in design.
  • the levers 20 and 21 are designed as leaf springs.
  • the two leaf springs 20 and 21 are anchored in the shoulder 10 of the handle 2 extending in a horizontal direction, on the one hand and, on the other, they are anchored in the housing 1 , e.g., in the carrier 11 .
  • the leaf springs 20 and 21 are oriented with their broadsides transverse to the direction of motion of the handle 2 , so that they are flexible in the direction of the longitudinal axis 3 of the hand power tool, and they are stiff in the direction transverse thereto.
  • the spring element 12 inserted between the housing 1 and the handle 2 can possibly be eliminated, as shown in FIG. 3 .
  • a spring element can also be used additionally to take up vibrations between the machine housing 1 and the handle 2 , or—as shown in FIG. 4 —it can be replaced by an active damping element 22 that is electrically controllable, for example, in such a fashion that it counteracts vibrations in the machine housing 1 .
  • Active damping elements that are used with hand power tools for vibration damping of the handle are made known in WO 98/21014 or EP 0 206 981 A2, for example.
  • such active damping elements are composed of an immersion coil 24 displaceably supported on a magnetic core, whereby the immersion coil is secured to the handle 2 and the magnetic core 23 is secured to the machine housing 1 , or the immersion coil 24 is secured to the machine housing 1 and the magnetic core 23 is secured to the handle 2 .
  • This active damping member will not be described in detail here, since a sufficient number of exemplary embodiments of this are made known in the related art.
  • an active damping element functions in such a fashion that the relative motion of the handle 2 in relation to the machine housing 1 , or the force exerted on the handle 2 is sensed, and the current flowing through the immersion coil 24 is controlled as a function of the measured relative motion or the force.
  • more than just one spring element or more than just one active damping element can also be inserted between the handle 2 and the machine housing.
  • the combination of spring element and active damping element is possible as well.
  • the parallel rocker arm is formed by two leaf springs 25 and 26 that are bent in such a fashion that they press the handle 2 with its lower stop 17 with a preload against the fixed arm 19 .
  • a certain force must be exerted on the handle 2 .
  • a mean process force of, e.g., 100 N to displace the handle 2 so far that the fixed arm 19 is located in the middle between the two stops 16 and 17 . This can prevent a situation in which the arm 19 slams against the two stops 16 and 17 during a work operation.
  • a damping element can also be inserted between the machine housing 1 and the shoulder 10 of the housing 2 extending in a horizontal direction, as shown in FIGS. 1 , 2 , and 4 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
US10/297,373 2001-04-11 2002-02-20 Hand tool machine comprising a vibration-dampened handle Expired - Fee Related US7100706B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE2001118037 DE10118037A1 (de) 2001-04-11 2001-04-11 Handwerkzeugmaschine mit vibrationsgedämpftem Handgriff
DE10118037.3 2001-04-11
DE2001138123 DE10138123A1 (de) 2001-08-03 2001-08-03 Handwerkzeugmaschine mit vibrationsgedämpftem Handgriff
DE10138123.9 2001-08-03
PCT/DE2002/000622 WO2002083369A1 (fr) 2001-04-11 2002-02-20 Machine-outil portative presentant une poignee avec un systeme d'amortissement des vibrations

Publications (2)

Publication Number Publication Date
US20030132016A1 US20030132016A1 (en) 2003-07-17
US7100706B2 true US7100706B2 (en) 2006-09-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
US10/297,373 Expired - Fee Related US7100706B2 (en) 2001-04-11 2002-02-20 Hand tool machine comprising a vibration-dampened handle

Country Status (6)

Country Link
US (1) US7100706B2 (fr)
EP (1) EP1404493B1 (fr)
JP (1) JP4157382B2 (fr)
CN (1) CN1273271C (fr)
DE (1) DE50209495D1 (fr)
WO (1) WO2002083369A1 (fr)

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US20010011846A1 (en) * 2000-02-04 2001-08-09 Harald Krondorfer Hand power tool with at least one handle
US20050247464A1 (en) * 2004-04-23 2005-11-10 Manfred Hellbach Power tool with a rotating and/or hammering drive mechanism
US20050263307A1 (en) * 2003-11-04 2005-12-01 Michael Stirm Vibration reduction apparatus for power tool and power tool incorporating such apparatus
US20060011365A1 (en) * 2003-11-04 2006-01-19 Michael Stirm Vibration reduction apparatus for power tool and power tool incorporating such apparatus
US20060185867A1 (en) * 2005-02-18 2006-08-24 Karl Frauhammer Hand-held power tool
US20070034397A1 (en) * 2005-08-11 2007-02-15 Hilti Aktiengesellschaft Hand-held power tool with vibration-reducing means
US20070056757A1 (en) * 2003-11-04 2007-03-15 Michael Stirm Vibration reduction apparatus for power tool and power tool incorporating such apparatus
US20070289762A1 (en) * 2006-06-16 2007-12-20 Kikukchi Atsuyuki Power tool
US20080000664A1 (en) * 2004-08-26 2008-01-03 Hubert Steinke Hand-Held Power Tool Handle Device With a Vibration-Shielding Unit
US20080000665A1 (en) * 2006-05-31 2008-01-03 Ingersoll-Rand Company Structural support for power tool housings
US20080017395A1 (en) * 2006-07-20 2008-01-24 Shinichiro Sato Electrical power tool having vibration control mechanism
US20080099222A1 (en) * 2005-09-28 2008-05-01 Ulrich Ranger Power Tool And Vibration Damper
US20080210447A1 (en) * 2007-01-10 2008-09-04 Aeg Electric Tools Gmbh Portable Hand-Guided Power Tool
US20090038121A1 (en) * 2007-08-06 2009-02-12 Roswitha Eicher Auxiliary handle device
US20090120658A1 (en) * 2006-06-28 2009-05-14 Axel Kuhnle Hand-held power tool
US20090218114A1 (en) * 2007-12-17 2009-09-03 Oliver Ohlendorf Hand-held power tool with vibration compensator
US20090272553A1 (en) * 2006-11-03 2009-11-05 Uwe Engelfried Hand-held power tool with a vibration-damped handle with a switch
US20100186979A1 (en) * 2007-06-20 2010-07-29 Jochen Krauter Machine hand tool housing unit
US20100236806A1 (en) * 2009-03-18 2010-09-23 Mark Heilig Oscillating Tool With Vibration Damping System
US20100263896A1 (en) * 2007-12-13 2010-10-21 Jens Brennenstuhl Hand-held power tool having a two-part housing
US20100270047A1 (en) * 2009-04-23 2010-10-28 Hilti Aktiengesellschaft Hand-held power tool
US20120125649A1 (en) * 2010-11-12 2012-05-24 Oliver Ohlendorf Hand-Held Machine Tool
US20130043052A1 (en) * 2011-07-26 2013-02-21 Black & Decker Inc. Hammer drill
US8966773B2 (en) 2012-07-06 2015-03-03 Techtronic Power Tools Technology Limited Power tool including an anti-vibration handle
US20150202764A1 (en) * 2014-01-23 2015-07-23 Black & Decker Inc. Rear handle
US9308636B2 (en) 2012-02-03 2016-04-12 Milwaukee Electric Tool Corporation Rotary hammer with vibration dampening
US20160176037A1 (en) * 2013-05-28 2016-06-23 Hitachi Koki Co., Ltd. Portable working machine
US9849577B2 (en) 2012-02-03 2017-12-26 Milwaukee Electric Tool Corporation Rotary hammer
US9993915B2 (en) 2014-01-23 2018-06-12 Black & Decker Inc. Rear handle
US10046451B2 (en) 2014-01-23 2018-08-14 Black & Decker Inc. Rear handle
US10137562B2 (en) 2014-01-23 2018-11-27 Black & Decker Inc. Rear handle
US20220241950A1 (en) * 2021-02-04 2022-08-04 Makita Corporation Power tool having hammer mechanism
US12021437B2 (en) 2019-06-12 2024-06-25 Milwaukee Electric Tool Corporation Rotary power tool

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GB2402098B (en) * 2003-05-21 2007-10-17 Black & Decker Inc Vibration reduction apparatus for power tool and power tool incorporating such apparatus
JP2005074573A (ja) * 2003-09-01 2005-03-24 Makita Corp 往復作動式作業工具
EP1514648B1 (fr) * 2003-09-10 2013-11-20 Makita Corporation Manche sans vibration
DE10355103B4 (de) * 2003-11-24 2010-03-18 Itw-Befestigungssysteme Gmbh Vibrationsgedämpfter Handgriff für ein handgeführtes Elektrowerkzeug
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DE102004055758B4 (de) * 2004-11-18 2018-05-09 Andreas Stihl Ag & Co. Kg Antivibrationselement eines handgeführten Arbeitsgerätes
DE102004061522A1 (de) * 2004-12-21 2006-06-29 Hilti Ag Seitenhandgriff
DE102006004776B4 (de) * 2005-02-17 2022-05-05 Andreas Stihl Ag & Co. Kg Handgeführtes, tragbares Saug-/Blasgerät
SE529839C2 (sv) * 2005-05-26 2007-12-04 Atlas Copco Constr Tools Ab Brytverktyg med avvibrerad handtagsanordning
JP2006346199A (ja) * 2005-06-16 2006-12-28 Ryobi Ltd 送風・吸引装置
DE102005047353A1 (de) * 2005-10-04 2007-04-05 Robert Bosch Gmbh Elektrowerkzeugmaschine
DE102005000205A1 (de) * 2005-12-23 2007-06-28 Hilti Ag Handgriff eines handgeführten Werkzeuggerätes
DE102005062883A1 (de) * 2005-12-29 2007-07-05 Robert Bosch Gmbh Schwingungsreduktion bei Elektrowerkzeugen
GB2431610A (en) * 2006-03-03 2007-05-02 Black & Decker Inc Handle Damping System
EP2012978B1 (fr) * 2006-03-07 2016-08-03 Hitachi Koki Co., Ltd. Outil d'alimentation electrique
DE102006016442A1 (de) * 2006-04-07 2007-10-11 Robert Bosch Gmbh Handwerkzeugmaschine mit vibrationsgedämpftem Handgriff
DE102006021307A1 (de) * 2006-05-08 2007-11-15 Robert Bosch Gmbh Handwerkzeugmaschine mit einem vibrationsgedämpften Handgriff
DE102006034078A1 (de) * 2006-06-02 2007-12-06 Robert Bosch Gmbh Schleifhandwerkzeugmaschine sowie Vibrationsentkopplungsvorrichtung einer Schleifhandwerkzeugmaschine
DE102006052807A1 (de) * 2006-11-09 2008-05-15 Robert Bosch Gmbh Handwerkzeugmaschine mit einem vibrationsgedämpften Bügelhandgriff
GB2431133A (en) * 2007-01-17 2007-04-18 Black & Decker Inc A power tool with vibration reduction apparatus
US8100745B2 (en) * 2007-03-16 2012-01-24 Black & Decker Inc. Low vibration sander with a flexible top handle
GB2451293A (en) * 2007-07-27 2009-01-28 Black & Decker Inc Hammer drill with slidably mounted handle
GB0801304D0 (en) * 2008-01-24 2008-03-05 Black & Decker Inc Hammer drill
CN101676052B (zh) * 2008-09-19 2013-10-30 德昌电机(深圳)有限公司 带力度感应装置的电钻
BR122021003836B1 (pt) 2008-11-18 2022-02-01 Commonwealth Scientific And Industrial Research Organisation Polinucleotídeo isolado e/ou exógeno que não ocorre de forma natural, vetor e método para produzir óleo contendo ácidos graxos insaturados
GB2472997A (en) * 2009-08-26 2011-03-02 Black & Decker Inc Hammer drill with vibration damping means in handle
WO2014160190A1 (fr) 2013-03-14 2014-10-02 Robert Bosch Gmbh Outil à main électrique à isolement de vibrations
EP2848370A1 (fr) * 2013-09-12 2015-03-18 HILTI Aktiengesellschaft Machine-outil manuelle
US10751868B2 (en) * 2014-11-28 2020-08-25 Makita Corporation Impact tool

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Cited By (53)

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Publication number Priority date Publication date Assignee Title
US7740087B2 (en) * 2000-02-04 2010-06-22 Robert Bosch Gmbh Hand power tool with at least one handle
US20010011846A1 (en) * 2000-02-04 2001-08-09 Harald Krondorfer Hand power tool with at least one handle
US7320369B2 (en) * 2003-11-04 2008-01-22 Black & Decker Inc. Vibration reduction apparatus for power tool and power tool incorporating such apparatus
US20050263307A1 (en) * 2003-11-04 2005-12-01 Michael Stirm Vibration reduction apparatus for power tool and power tool incorporating such apparatus
US20060011365A1 (en) * 2003-11-04 2006-01-19 Michael Stirm Vibration reduction apparatus for power tool and power tool incorporating such apparatus
US7762348B2 (en) 2003-11-04 2010-07-27 Black & Decker Inc. Vibration reduction apparatus for power tool and power tool incorporating such apparatus
US20070056757A1 (en) * 2003-11-04 2007-03-15 Michael Stirm Vibration reduction apparatus for power tool and power tool incorporating such apparatus
US7472760B2 (en) 2003-11-04 2009-01-06 Black & Decker Inc. Vibration reduction apparatus for power tool and power tool incorporating such apparatus
US20050247464A1 (en) * 2004-04-23 2005-11-10 Manfred Hellbach Power tool with a rotating and/or hammering drive mechanism
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JP4157382B2 (ja) 2008-10-01
US20030132016A1 (en) 2003-07-17
CN1460049A (zh) 2003-12-03
EP1404493B1 (fr) 2007-02-14
CN1273271C (zh) 2006-09-06
DE50209495D1 (de) 2007-03-29
EP1404493A1 (fr) 2004-04-07
WO2002083369A1 (fr) 2002-10-24
JP2004518553A (ja) 2004-06-24

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